VC++ 中 的 日 期 盒 通 用 类 的 实 现 


---- 本 人 在Visual C++ 的 应 用 实 践 中， 感 到 许 多 应 用 程 序 都 需 要 用 到 日 期 的 输 入， 为 了 提 高 编 程 的 速 度 和 效 率， 减 少 繁 重 的 不 必 要 的 重 复 编 程 工 作， 编 了 一 个 通 用 的 日 期 盒 类， 这 样 在 以 后 有 用 到 日 期 输 入 的 地 方 直 接 引 用 就 可 以 了， 大 大 提 高 了 工 作 效 率， 并 且 很 美 观 实 用。 

---- 以 下 是 日 期 盒 通 用 类 实 现 的 演 示。 

 

---- 以 下 是 日 期 盒 通 用 类 的 源 程 序。 

    // DateLBox.h : 
class CDateLBox : public CWnd
{
public:
   CDateLBox();
public:
   CTime m_time[2];
   CRect m_rectPrev, m_rectNext, m_rect[31];
private:
   CComboBox* m_pComboBox;
public:
   void SetComboBox(CComboBox* combo)
    {m_pComboBox=combo;}
public:
   void SetupDate();
   // ClassWizard 
   //{{AFX_VIRTUAL(CDateLBox)
   //}}AFX_VIRTUAL
public:
   virtual ~CDateLBox();
protected:
   //{{AFX_MSG(CDateLBox)
   afx_msg void OnPaint();
   afx_msg void OnLButtonDown
    (UINT nFlags, CPoint point);
   afx_msg void OnWindowPosChanged
    (WINDOWPOS FAR* lpwndpos);
   afx_msg void OnLButtonDblClk
    (UINT nFlags, CPoint point);
   //}}AFX_MSG
   DECLARE_MESSAGE_MAP()
};
  // DateLBox.cpp : 
  #include "stdafx.h"
#include "DateBox.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
void CDateLBox::SetupDate()
{
    m_time[0]=CTime(0);
      m_time[1]=CTime::GetCurrentTime();
      CString str;
      m_pComboBox- >GetWindowText(str);
      int nYear, nMonth, nDay;
      if (sscanf((LPCSTR)str, "%d/%d/%d", &nYear,
    &nMonth, &nDay)==3) {
   if (nYear >=1971&&nYear<=2037&&nMonth>=1&&
    nMonth<=12&&nDay>=1&&nDay<=31) { CTime t(nYear, nMonth, nDay, 0, 0, 0); if (t.GetYear()="=nYear&&t.GetMonth()" { m_time[0]="t;m_time[1]=t;" } } } } CDateLBox::CDateLBox() { m_time[0]="CTime(0);" m_time[1]="CTime::GetCurrentTime();}" CDateLBox::~CDateLBox(){} BEGIN_MESSAGE_MAP(CDateLBox, CWnd) //{{AFX_MSG_MAP(CDateLBox) ON_WM_PAINT() ON_WM_LBUTTONDOWN() ON_WM_WINDOWPOSCHANGED() ON_WM_LBUTTONDBLCLK() //}}AFX_MSG_MAP END_MESSAGE_MAP() // CDateLBox void CDateLBox::OnPaint() { CPaintDC dc(this); // dc.SetBkMode(TRANSPARENT); CRect rect; GetClientRect(rect); CFont* pFont="dc.SelectObject" (GetFocus()->GetFont());
dc.DrawText(m_time[1].Format("%Y%#m"),
CRect(rect.left,rect.top,rect.right,
   rect.top+rect.Height()/8*1), DT_SINGLELINE|
   DT_CENTER|DT_VCENTER);
m_rectPrev.SetRect(rect.left+rect.Width()
/7*0,rect.top,rect.left+rect.
      Width()/7*1,rect.top+rect.Height()/8*1);
dc.MoveTo(m_rectPrev.left+m_rectPrev.Width()
/2-2,m_rectPrev.top+m_rectPrev.Height()/2-1);
dc.LineTo(m_rectPrev.left+m_rectPrev.Width()
/2-2, m_rectPrev.top+m_rectPrev.Height()/2);
dc.MoveTo(m_rectPrev.left+m_rectPrev.Width()
/2-1, m_rectPrev.top+m_rectPrev.Height()/2-2);
dc.LineTo(m_rectPrev.left+m_rectPrev.Width()
/2-1, m_rectPrev.top+m_rectPrev.Height()/2+1);
dc.MoveTo(m_rectPrev.left+m_rectPrev.Width()
/2, m_rectPrev.top+m_rectPrev.Height()/2-3);
dc.LineTo(m_rectPrev.left+m_rectPrev.Width()
/2, m_rectPrev.top+m_rectPrev.Height()/2+2);
dc.MoveTo(m_rectPrev.left+m_rectPrev.Width()
/2+1, m_rectPrev.top+m_rectPrev.Height()/2-4);
dc.LineTo(m_rectPrev.left+m_rectPrev.Width()
/2+1, m_rectPrev.top+m_rectPrev.Height()/2+3);
m_rectNext.SetRect(rect.left+rect.Width()
/7*6,rect.top,rect.left+rect.Width()
/7*7,rect.top+rect.Height()/8*1);
dc.MoveTo(m_rectNext.left+m_rectNext.Width()
/2+1, m_rectNext.top+m_rectNext.Height()/2-1);
dc.LineTo(m_rectNext.left+m_rectNext.Width()
/2+1, m_rectNext.top+m_rectNext.Height()/2);
dc.MoveTo(m_rectNext.left+m_rectNext.Width()
/2, m_rectNext.top+m_rectNext.Height()/2-2);
dc.LineTo(m_rectNext.left+m_rectNext.Width()
/2, m_rectNext.top+m_rectNext.Height()/2+1);
dc.MoveTo(m_rectNext.left+m_rectNext.Width()
/2-1, m_rectNext.top+m_rectNext.Height()/2-3);
dc.LineTo(m_rectNext.left+m_rectNext.Width()
/2-1,m_rectNext.top+m_rectNext.Height()/2+2);
dc.MoveTo(m_rectNext.left+m_rectNext.Width()
/2-2, m_rectNext.top+m_rectNext.Height()/2-4);
dc.LineTo(m_rectNext.left+m_rectNext.Width()
/2-2,m_rectNext.top+m_rectNext.Height()/2+3);
dc.SetTextColor(RGB(255,0,0));
dc.DrawText(" 日",-1,CRect(rect.left+rect.Width()
/7*0,rect.top+rect.Height()/8*1, 
rect.left+rect.Width()/7*1,rect.top+rect.Height()/8*2),
DT_SINGLELINE|DT_CENTER|DT_VCENTER);
dc.SetTextColor(RGB(0,0,0));
dc.DrawText(" 一", -1, CRect(rect.left+rect.Width()
/7*1, rect.top+rect.Height()/8*1, rect.left+rect.Width()
/7*2,rect.top+rect.Height()/8*2),
DT_SINGLELINE|DT_CENTER|DT_VCENTER);
dc.DrawText(" 二", -1, CRect(rect.left+rect.Width()
/7*2, rect.top+rect.Height()/8*1, rect.left+rect.Width()
/7*3,rect.top+rect.Height()/8*2),
DT_SINGLELINE|DT_CENTER|DT_VCENTER);
dc.DrawText(" 三", -1, CRect(rect.left+rect.Width()
/7*3, rect.top+rect.Height()/8*1, rect.left+rect.Width()
/7*4,rect.top+rect.Height()/8*2),
DT_SINGLELINE|DT_CENTER|DT_VCENTER);
dc.DrawText(" 四", -1, CRect(rect.left+rect.Width()
/7*4, rect.top+rect.Height()/8*1, rect.left+rect.Width()
/7*5,rect.top+rect.Height()/8*2),
DT_SINGLELINE|DT_CENTER|DT_VCENTER);
dc.DrawText(" 五", -1, CRect(rect.left+rect.Width()
/7*5, rect.top+rect.Height()/8*1, rect.left+rect.Width()
/7*6,rect.top+rect.Height()/8*2)
,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
dc.SetTextColor(RGB(0,0,255));
dc.DrawText(" 六", -1, CRect(rect.left+rect.Width()
/7*6, rect.top+rect.Height()/8*1, rect.left+rect.Width()
/7*7,rect.top+rect.Height()/8*2),
DT_SINGLELINE|DT_CENTER|DT_VCENTER);
CSize size(rect.Width()/7, rect.Height()/8);
CPoint point(0, rect.top+size.cy*2);
for(Ctime t(m_time[1].GetYear(),m_time
[1].GetMonth(),1,0,0, 0);
  t.GetMonth()==m_time[1].GetMonth();
   t+=CTimeSpan(1, 0, 0, 0))
{
   point.x=rect.left+size.cx*(t.GetDayOfWeek()-1);
   m_rect[t.GetDay()-1]=CRect(point, size);
   if (t==m_time[0]) {
      dc.FillSolidRect(m_rect[t.GetDay()-1], 
     ::GetSysColor(COLOR_HIGHLIGHT));
      dc.SetTextColor(::GetSysColor
      (COLOR_HIGHLIGHTTEXT));
   } else {
      CDateBox* combo=(CDateBox*)m_pComboBox;
      COLORREF ref=combo- >GetDateColor(t);
      dc.SetTextColor(ref);
   }
   dc.DrawText(t.Format("%#d"),m_rect[t.GetDay()-1], 
    DT_SINGLELINE|DT_CENTER|DT_VCENTER);
   if (t.GetDayOfWeek()==7) {point.y+=size.cy;}
  }
 dc.SelectObject(pFont);
}
void CDateLBox::OnLButtonDown(UINT nFlags, CPoint point) 
{
    if (m_rectPrev.PtInRect(point)) {
     CTime t;
     if(m_time[1].GetMonth()==1)
     t=CTime(m_time[1].GetYear()-1,12, 1, 0, 0, 0);
      else
      t=CTime(m_time[1].GetYear(), m_time
     [1].GetMonth()-1, 1, 0, 0, 0);
   if (t.GetYear() >=
   1971&&t.GetYear()<=2037) {m_time[1]="t;" Invalidate();} return; } if (m_rectNext.PtInRect(point)) { CTime t; if(m_time[1].GetMonth()="=12)" t="CTime(m_time[1].GetYear()+1,1," 1, 0, 0, 0); else t="CTime(m_time[1].GetYear()," m_time [1].GetMonth()+1, 1, 0, 0, 0); if (t.GetYear()>=1971&&t.GetYear()<=2037) { m_time[1]="t;Invalidate();}" return; } for (CTime t(m_time[1].GetYear(), m_time[1].GetMonth(),1,0,0, 0); t.GetMonth()="=m_time[1]." GetMonth();t+="CTimeSpan(1," 0, 0, 0)) { if (m_rect[t.GetDay()-1].PtInRect(point)) { m_pComboBox->SetFocus();
      m_pComboBox- >SetWindowText
     (t.Format("%Y/%#m/%#d"));
      m_pComboBox- >SetEditSel(0, -1);
      SetupDate();
       Invalidate();
      m_pComboBox- >ShowDropDown(FALSE);
      CWnd* parent=m_pComboBox- >GetParent();
      if (parent) {
      parent- >PostMessage(WM_COMMAND, 
     MAKELONG(m_pComboBox- >
     GetDlgCtrlID(),CBN_SELCHANGE),
     (LPARAM)m_pComboBox- >m_hWnd);
         }
         return;
      }
   }
   CWnd::OnLButtonDown(nFlags, point);
}
void CDateLBox::OnWindowPosChanged
(WINDOWPOS FAR* lpwndpos) 
{
   CWnd::OnWindowPosChanged(lpwndpos);
   SetupDate();
}
void CDateLBox::OnLButtonDblClk
(UINT nFlags, CPoint point) 
{   OnLButtonDown(nFlags, point);   }
// DateBox.h : 
#include "DateLBox.h"
// CDateBox 
class CDateBox : public CComboBox
{
public:
   CDateBox();
public:
   BOOL   m_bSubclass;
   CDateLBox   m_dlb;
   time_t   m_time;
public:
   operator time_t();
   void SetupDate(CTime t);
   virtual COLORREF GetDateColor(CTime t)
   {   return RGB(0,0,0);   }
   // ClassWizard 
   //{{AFX_VIRTUAL(CDateBox)
   //}}AFX_VIRTUAL
public:
   virtual ~CDateBox();
protected:
   //{{AFX_MSG(CDateBox)
   afx_msg HBRUSH OnCtlColor
    (CDC* pDC, CWnd* pWnd, UINT nCtlColor);
   afx_msg void OnShowWindow
    (BOOL bShow, UINT nStatus);
   //}}AFX_MSG
   DECLARE_MESSAGE_MAP()
};
// DateBox.cpp : 
#include "stdafx.h"
#include "DateBox.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
// CDateBox
CDateBox::CDateBox()
{   m_bSubclass=FALSE;   }
CDateBox::~CDateBox(){}
BEGIN_MESSAGE_MAP(CDateBox, CComboBox)
   //{{AFX_MSG_MAP(CDateBox)
   ON_WM_CTLCOLOR()
   ON_WM_SHOWWINDOW()
   //}}AFX_MSG_MAP
END_MESSAGE_MAP()
// CDateBox 
HBRUSH CDateBox::OnCtlColor(CDC* 
pDC, CWnd* pWnd, UINT nCtlColor) 
{
   HBRUSH hbr = CComboBox::OnCtlColor
    (pDC, pWnd, nCtlColor);
   if (!m_bSubclass&&nCtlColor==
    CTLCOLOR_LISTBOX) {
      m_bSubclass=m_dlb.SubclassWindow
     (pWnd- >m_hWnd);
      m_dlb.SetComboBox(this);
      m_dlb.SetupDate();
      m_dlb.Invalidate();
   }
   return hbr;
}

CDateBox::operator time_t()
{
   CString str;
   GetWindowText(str);
   int nYear, nMonth, nDay;
   if (sscanf((LPCSTR)str, "%d/%d/%d",
    &nYear, &nMonth, &nDay)==3) {
   if(nYear >=1971&&nYear< =2037&&nMonth >=1&&
   nMonth< =12&&nDay >=1&&nDay< =31) {
      CTime t(nYear, nMonth, nDay, 0, 0, 0);
      if (t.GetYear()==nYear&&t.GetMonth()
      ==nMonth&&t.GetDay()==nDay) 
{   return(t.GetTime());   }
      }
   }
   return(0);
}
void CDateBox::SetupDate(CTime t)
{
   CString tim;
   tim.Format("%04d/%02d/%02d", 
    t.GetYear(), t.GetMonth(), t.GetDay());
   SetWindowText(tim);
   if (IsWindow(m_dlb.m_hWnd)) 
{   m_dlb.SetupDate();   }
}
void CDateBox::OnShowWindow(BOOL bShow, UINT nStatus) 
{   CComboBox::OnShowWindow(bShow, nStatus);   }